Hii 

For the admission in iiser 2019 through SCB ,candidates have to score within cut-off .

For admission in IISER through SCB ( state and central board channel) ,a must have to :-

.Candidates have to  passed 10+  with science stream

. For the admission,candidates have to score within in cut-off.

.Candidates, who apply through SCB will have to appear for IAT  exam .

 As you mentioned your score as 8.67 point .

Dear aspirant .. admission in IISER through SCB for  different board  it have different cutoff . As  per previous cut-off :-

BOARD .                  % Cut- off 

Assam                             71.9

Bihar                               71

Chhattisgarh .                 76          

Andhar pradesh             95.4

Tamil Nadu .                  95.2        

As you are from Andhar pradesh ,so your score must be 95.4 or more for admission in IISER.